I love this book, because I recently love to crochet lace, like doilies, filet crochet and irish crochet. And this book covers all of them. It doesn't only show you the instructions, it even has patterns (and it shows you how to do it step by step).
If you are interested in any lace crochet, this is a MUST HAVE.
It is available at NameThatCandy Etsy and Artfire.